Cita APA (7a ed.)

Stewart, D. W. (1988). Secondary research: Information sources and methods. Sage.

Cita Chicago Style (17a ed.)

Stewart, David W. Secondary Research: Information Sources and Methods. Beverly Hills [etc.]: Sage, 1988.

Cita MLA (9a ed.)

Stewart, David W. Secondary Research: Information Sources and Methods. Sage, 1988.